This week was all about the details. And the winners are...

Laura Haddock in Dolce & Gabbana at “The Inbetweeners Movie” premiere in London. The actress oozed sex appeal in this sheer, off-the-shoulder gown, pairing it with a chained handbag.

Rashida Jones in Stella McCartney at the “Our Idiot Brother” premiere in Los Angeles. Rashida took a fresh approach to color-blocking in this black, fuchsia and red peplum dress. Not one to shy away from color, she topped off her look with a red lip and gray, suede platforms.

Catherine, Duchess of Cambridge in Alexander McQueen during her trip to Birmingham. As usual, Catherine hit it right on the mark with this military-inspired blouse and pencil skirt duo, which featured gold buttons throughout. She completed her look with navy pumps.

Kelly Rowland in Versace at an "X Factor" press event in London. The singer added an extra element of edge to her dangerous-curves-ahead bodice with ankle booties. 

Olivia Munn in Carolina Herrera at the “Our Idiot Brother” premiere in Los Angeles. The TV presenter proved a class act in this white and black cocktail dress, which was gathered at the one shoulder for more drama. I also love how Olivia added some spunk to her otherwise refined look with coral-accented earrings.

Photos (left to right): Mike Marsland/WireImage; Jon Kopaloff/FilmMagic; Chris Jackson/Getty Images; Mike Marsland/WireImage; Jeffrey Mayer/WireImage